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POPE & WHIPPLE.

Balance Scale.

Patented Oct. 15, 1867.

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JOSEPH P. POPE AND JAMES T. WHIPPLE, GE CHICAGO, ILLINOIS.

Letters Patent No. 69,933, dated October 15, 1867.

WEIGHING-SGALES.

TO ALL WHOM IT MAY CONCERN:

Be it known that we, Josisrn P. Porn and Janus T. WHIPPLE, of the cityofChicago, in the county of Cook, and State of Illinois, havemadean'Improvement in Weighing-Scales; and we do hereby declare that thefollowing is a full and exact description of the construction andoperation of the same, reference being had to the accompanying drawings,and to the letters of reference marked thereon, making a part of thespecification, in which Figure 1 is aperspective view of the scale withits corresponding parts attached. Figure 2 is a section of thecountorpoisc, stem, and lower balancing-beam, showing the manner ofpivoting vthe same.

Similar letters of reference, where they occur in the separate figures,indicate like parts in each of the drawings.

Our invention relates to an improvement in that class of scales that aremore generally used in warehouses; and the nature of our improvementconsists, first, in suspending from the lower or bottom sideof theplatform of the scales, (placed upon a second floor,) by means'ofchains, rods, or otherwise, a second platform, so arranged that theweight of the article to be weighed may be indicated upon the firstfloor, by means of a second counterpoise and balancing-beam pivoted to avertical rack suspended from the lower side of the ceilingjoist of thefloor above, whereby the working edges of the scale are secured fromdampness and rust, and their accuracy preserved for a much longer time;and furthermore, by this so arranged mechanism we practically have thebenefit of a weighing device upon each floor, with a slight additionalcost to that of procuring a single scale.

To enable others skilled in the art to construct and use our invention,we will proceed to describe the same with reference to the drawings. v

M represcrits the second floor of the building, and A the scalesthereon, which may be of any heretofore known form of construction. B,the platform of the scales. To the lower side of said platform aresecurely attached rods or chaifis C and D, the same passing downwardfrom said platform through the framework of the scales and floor M, andare coupled to the centre of cross-bars h It. From the outer ends ofsaid cross-bars is hinged and obliquely suspended a second system ofrods, 1, 2, 3, and 4, which are hinged at their lower ends to the upperside of a second platform, 0, upon which the article (on the first floorto be weighed) is placed. Bolted to the lower side of the ceiling-joistof floor M is a vertical rack, D, extending downward, and its lower endbent around horizontally in the form of the letter L, the bent partthereof extending forward, and is pro vided at the end with a loop oreye through which the counterpoise stem e" passes. Said rack D isprovided, at or just above the bend therein, with a slot or mortise,through which passes balancing-beam m. Said beam is provided with apivot, 2', which passes through a second mortise cut through said rackat right angles with the slot Z forming the fulcrum upon which said beammoves, said beam extending forward, (to a distance equal in length tothe horizontal position of rack D,) and passes through a vertical slotor mortise cut in said counterpoisc stem 0, which is provided with asecond mortise cut at right angles with said slot 1, through whichpasses a second pivot, i", that extends through the end of said beam,forming the operating or lifting fulcrum of said beam m. Saidcou-nterpoise stem e passes upward from the end of said beam through thefloor M, and is connected to the bottom of connterpoise e by means of ahookand eye, said countcrpoisc being suspended from the outer end of thebalancing-beam m of the scales above; thus the parts indicating theweight on both platforms are connected one to the other; the distancefrom the fulcrum of beam m to pivot i, where the same receives theoperating power, being equal to the distance from the fulcrum of beam mof the scales above to the point where the sauic receives thecoudterpoise stem and weight. Hinged to the first floor, beneathplatform C, is a system of rods, 0 and 0",jointcd levers sand 3, soconstructed as to be capable of vertical adjustment by means of anoperating lever, W, holding and stop-rod, 27. When said combination isproperly adjusted the upper ends of levers s s are raised verticallyagainst said platform 0; thus the same is raised upward when placing'thcarticle thereon to be weighed the heft is removed from the indicatingparts of the scale.

The operation of our weighing device is as follows: The scales abovebeing in balance by means of a balancing-hall (not shown in thedrawings) within the scale-pillar at the rear end of beam m, the articleto be weighed is placed on platform C, which communicates with platformB of the'scales above by means of rods 1, 2, 3, and 4, cross-bars h it,and rods 1i and c, said platform B communicating-(by means of a systemof rods and levers not mentioned) with beam m of the scale above. To theouter end of said beam is connected the eounterpoise stem .e, to whichis suspended counterpoise stem e, extending doivnward, and communicatingwith the outer end of beam m by means of pivot i, said beam being inbalance by means of balancing-ball T; thus the heft of the article tiltsthe outer end of beam m upward; The weight of every hundred pounds isindicated by means of weights placed on the counterpoise, and thefractional parts thereof are indicated in figures by the outward movingof the poisef on beam m.

'Ha wing thus described the nature and object of our invention, What weclaim as new, and desire to secure by Letters Patent, is

1. Platform 0, suspended from platform B of the scales above,substantially as and for the purpose set forth.

2. Rack D and balancing-beam m, substantially as andfor the purposedescribed. 3. The combination of rods 0 0", jointed levers s s, lever W,and holding or stop-rod 25, substantially as described.

JOSEPH P. POPE.

JAMES T. WHIPPLE.

Witnesses:

W. H. Summons, G. J. HADLEY.

